Strange movment when switching between fragments

[aurelajasiqi-velanis]

When I use supportFragmentManager to hide and show fragments, navigation bar floats sometimes from up to down or other way around when i click on its items. When I remove onItemSelectedListener it doesnt happpen anymore. This is some piece of code I use

      navigation.setOnItemSelectedListener {

            when(it){
                R.id.home_tab_navigation -> {

                    manager.beginTransaction().hide(activeFragment).show(homeFragment).commit()
                    activeFragment = homeFragment
                    return@setOnItemSelectedListener
                }

}